Volume 4 Part 1 Article 22: Cecid Control by Incorporation of Insecticides in Composts

Volume 4 Part 1 Article 22
Year 1960
Title: Cecid Control by Incorporation of Insecticides in Composts
Authors: N.W. Hussey and I.J. Wyatt


A few years ago Cecids were responsible for serious crop losses in the United Kingdom and although there is less publicity about them at the present time they remain an unsolved problem. Since research on entomological problems began at Littlehampton in 1956, attention has been concentrated upon Cecids, and the main conclusions of our work to date will be found in our papers to this conference and our contribution to the M.G.A. Southport conference in 1957.

When our observations on Cecids began, we believed that the large larval populations often found in the beds would be responsible for reductions in crop yields in addition to the damage caused by migration of the larvae onto the mushrooms themselves. Mr. Wyatt, in his paper, has analysed the problems arising from the unusual paedogenetic reproduction of the larvae and we will assume that this phenomenon is understood.

The method of original infestation by Cecid larvae is still in doubt but we believe that most infestations result from the eggs laid by a few adults entering the compost soon after spawning. As reported by Hussey & Wyatt (1958), Cecid larvae succumb to a temperature of 116°F maintained for 1 hour and it is therefore apparent that normal peak-heating should free a house, and its compost, of Cecids. However, Mr. B. D. Moreton has found larvae in bedboards 1\2″ thick and it is possible that, on some farms, the peak-heat may not raise the temperature sufficiently within boards or posts.

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